CVE-2020-21653 Server-side request forgery in n/a

Critical 9.1 Published 6 Oct 2021 Updated 4 Aug 2024

An attacker can exploit a Server-Side Request Forgery vulnerability in Myucms to interact with internal resources or bypass security controls.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2020-21653?

CVE-2020-21653 is a critical server-side request forgery vulnerability in n/a, published on 6 Oct 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Myucms v2.2.1 contains a server-side request forgery (SSRF) in the component \controller\index.php, which can be exploited via the sj() method.

Weakness: CWE-918

Which versions are affected by CVE-2020-21653?

It affects 1 product.

Products include Myucms Project Myucms.

How do I fix CVE-2020-21653?

No fix has been published for CVE-2020-21653 yet. Limit exposure of the affected software until one is available.

Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.

Is CVE-2020-21653 being exploited?

There is no known exploitation of CVE-2020-21653 in the wild and no public exploit code.

Sources

Also known as GHSA-wc2v-p2ch-rf7v.